It's good to have a few prepared games on your list of kid pool party ideas, just in case the group needs an organized activity to bring everyone together. One of the easiest pool party games for kids is having a scavenger hunt dive!

While kids have their eyes shut, throw in a bunch of pool-safe, sinkable items (e.g., diving rings) for players to jump-in, seek and retrieve. They can either collect as many as they can, or recover specific items the referee calls out by name.

Tip: if you throw in a clear and filled plastic water bottle, it will sink and remain moderately camouflaged. It can be a fun challenge item for kids to hunt!